The TFC-110S40D3i intelligent fi ber converter works with the TFC-1600 chassis system or as a standalone unit. This converter is a Dual Wavelength Single Mode SC-Type fi ber converter that spans distances up to 40km (24.9 miles). This module must be used with the TFC-110S40D5i module. Ports include 1 x 10/100Base-TX (RJ-45) port and 1 x 100Base-FX (SC Simplex Type) port